1// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
2// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
3// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
4// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
5
6#include <sanitizer/msan_interface.h>
7
8int main(int argc, char **argv) {
9  int x;
10  int *volatile p = &x;
11  return __sanitizer_unaligned_load32(p);
12  // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
13  // CHECK: {{#0 0x.* in main .*unaligned_read_origin.cc:}}[[@LINE-2]]
14  // CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'main'
15  // CHECK: {{#0 0x.* in main .*unaligned_read_origin.cc:}}[[@LINE-7]]
16}
17